Organ stop



y July 28, 1936.

C. S. NORBURN ORGAN STOP Filed sept. 17, 1935 :wk @Wk gil l WNNMLNI@ NN Patented July 28, 1936 PATENT OFFICE ORGAN STOP Charles S. Norburn, Asheville, N. C. Application September 17, 1935, Serial No. 40,977

13 claims.

This invention relates to pipe organs, and particularly to an improvement in V'stops for such organs.

An early formof organ stop included a flat Wooden slide operating in a sheath formed by a beam beneath the slide, the pipe board above the same, and two lateral guides, the slide being provided with a plurality of holes'which are moved into and out of register with openings furnishing wind passages between the wind box and the organ pipes, and serving to establish and interrupt communication between the windbox and the pipes.

Such slides were subject to imperfect operation,

and in damp weather lthe parts were apt to swell and bind, thus requiring an excessive amount of power to move the slides.' The diiculty in maintaining the parts air-tightand capable ofk eilicient operation has resulted: in the use of some form of pneumatic pouches for stopping the pipe action. This invention relates to an improved formk of a simple mechanical stop slide of 'the general character of the old flat woo'denslides.

An object ofthe present invention s is to provide van organ stop including a s'lide. of such form and so assembled for operationzthatit will notY bind, is air-tight under all conditions, and requires a minimum of power for its operation. An object` is to provide organ` stops having slides which through use Work down to a better i'lt and become smoother in operation; f More specically, `an object is to provide an organ stop including a beam providedwith one or more boresconnected with the Wind -boxr and with the organ pipe or' pipes, this beam `having a substantially triangular, wedge-'shaped or V-shaped channel extending transverselyofthe bores and intersecting rthe same, a correspondingly shaped slide seated in the channel and adjusting mechanism for' moving the slide longitudinally in the channel, thereby to bringthe bore or bores of theslide linto and out with the bore or bores of the beam.

' These and other objects and advantages of the of register invention will be apparent from the :following' specification when takenwith the .z'tccornpanyingvv drawing, infwhich:

Fig. 1 is a perspective-viewr illustrating the novel features of an organ stop constructed inaccordance with the invention;

Fig. 2 is` an enlarged transverse" section ofthe stop taken substantially upon the axis of one of the bores of the beam; f

Fig. 3 is an enlarged fragmentarysectional front elevation of the organ stop;

Fig; 4 is a perspective view ola slide element;

Fig. 5 is a plan view, partly in section and partly in elevation, illustrating the stop of the invention adapted to a duplex arrangement;

Fig. 6 is a transverse section of the arrangement of stop illustrated in Fig. 5; and

Fig. 7 shows a modification of the invention in which gravity furnishes the means for holding the slide seated in the beam.

Referring particularly to the form of the invention illustrated in Figs. 1 to 4 inclusive, the beam l; which is kpreferably made of suitable wood, is provided with a plurality of vertically arranged bores 2 which communicate at their upper ends with the pipes 3 through the medium of the usual pipe board 3a. These bores 2 extend completely through beam l, as will be apparent from an inspection of Figs. 2 and 3, and their lower ends are connected by suitable valved conduits,'or other connections, with the organ wind plemental to the channel 4, and may be formed from the piece removed from the beam by sawing of the channel, as described, or may be otherwise produced. The V-shaped sections 5 may have theirapexes removed, as indicated at 6, to lessen the friction and weight or, alternatively, the apexes may be left to lessen any tendency towards warping. The sections are made of less depth than the channel to provide a space for the reception', within the confines of the beam, of means for holding the slide to a seat in the channel and for imparting to the slide the longitudinal movement necessary for its proper functioning.

The several sections 5 of the slide are provided with bores I- yspaced similarly to the spacing of the bores 2 of the beam, and hence capable of register therewith.

When the slide is made from the piece of theA beam produced by sawing of the channel 4, the bores 2 of the beam and the bores 1 of the slide are formed in the same operationand subsequent to sawing of the channels, by clamping the piece from which the slide is formed in the channel and drilling through the beamand slideforming piece simultaneously, thus ensuring proper .register and alignment of the bores.

All of the sections 5 are connected to a slidable strip 8 by means of screws 9 or other appropriate connecting members fixed in the sections of the slide and fitting relatively loosely in holes II'J in the strip 8. Springs II surrounding and held in place by the screws 9 serve to exert pressure between adjacent faces of the sections 5 of the slide and the strip 8, and the strip 8 bears against and is guided by battens I2 arranged at suitable intervals throughout the length of the beam I and rigidly secured thereto by screws I3 or other suitable fastening means.

Any desired type of operating means may be connected to the screw eye I4 of strip 8, thereby to move the stop sections 5 longitudinally of the channel 4 to bring the bores of the stop sections into alinement with the bores 2 of the beam. Reverse movement of the slide may be accomplished by a spring I5 applied as indicated in Fig. 1 or otherwise, as may be found expedient. Movement of the slide is limited by stops I6 arranged at the ends of the beam.

Obviously, the contacting faces of the channel 4 and sliding sections 5 will be appropriately smoothed to provide good seating of the parts, and these faces may, also, be graphited or otherwise treated to ensure easy sliding movement.

The mode of construction and assembly of the parts of the stop will make it apparent that relative swelling and shrinkage of the moving parts will not result in diicult, faulty or inefficient operation, for the reason that the sections 5 of the slide are free at one side and are held seated in the channel 4 by means of the springs II which bear against this free slide. They are therefore capable of adjusting themselves to the channel under the pressure of these springs.

As shown in Figs. 5 and 6, the invention may be adapted to a duplex arrangement by duplieating, at opposite sides of the beam, the bores, channels and slides, and their associated parts, and by connecting the bores at opposite sides of the beam by means of gutters or depressions Il over which is placed the pipe board I8 carrying the organ pipes 3. The operation of this adaptation of the invention will, it is thought, be apparent.

As shown in Fig. '7, the springs II, or their equivalent, may be dispensed with by arranging the channel l in the upper surface of beam I, with its apex pointed downward, and by providing a horizontal bore 2 terminating in an upward bend 2 for accommodation of the organ pipe 3. In the channel 4 is arranged the slide or slides 5 with bores I in position for register with the bores 2', and the slides 5 will be yieldingly seated in the channel by gravity. If desired, the slide may be weighted in any suitable manner, as indicated at I9, to ensure good contact of the cooperating faces of the slide and channel.

Various changes are contemplated as within the spirit of the invention and the scope of the following claims.

I claim:

l. In an organ stop, a beam having a bore providing communication between a wind box and an organ pipe, a channel in said beam arranged transversely cf and intersecting said bore and dividing the same into two spaced sections, and a slide complemental to said channel and seated therein, said slide being provided with a bore and movable longitudinally of said channel to shift its bore into and out of register with the spaced bore sections of said beam.

2. In an organ stop, a beam having a bore providing communication between a wind box and an organ pipe, a substantially V-shaped channel in said beam arranged transversely of and intersecting said bore, and a slide complemental to said channel and seated therein, said slide being provided with a bore and movable longitudinally of said channel to shift its bore into and out of register with the bore of said beam.

3. In an organ stop, a beam having a bore providing communication between a wind box and an organ pipe, a channel in said beam arranged transversely of and intersecting said bore and dividing the same into two spaced sections, a slide complemental to said channel, and means yieldingly retaining said slide seated in said channel, said slide being provided with a bore and movable longitudinally of said channel to shift its bore into and out of register with the spaced bore t sections of said beam.

4. In an organ stop, a beam having a bore providing communication between a. wind box and an organ pipe, a substantially V-shaped channel in said beam arranged transversely of and intersecting said bore, and a slide complemental to said channel and yieldingly seated therein, said slide being provided with a bore and movable longitudinally of said channel to shift its bore into and out of register with the bore of said beam.

5. In-an organ stop, a. beam having a. plurality of bores providing communication between a wind box and a plurality of organ pipes, a channel in said beam arranged transversely of said bores and intersecting and dividing the same into two spaced sections, a slide comprising a plurality of substantially similar sections complementa] to said channel and seated therein, said slide sections being provided with bores complementari to the bores of said beam, and means for connecting and simultaneously moving said slide sections, whereby the bores thereof may be shifted into and out of register with the spaced sections of the bores of said beam.

6. In an organ stop, a beam having a plurality of bores providing communication between a wind box and a plurality of organ pipes, a channel in said beam arranged transversely of said bores and intersecting and dividing the same into two spaced sections, a slide comprising a plurality of substantially similar sections complemental to said channel and seated therein, said slide sections being provided with bores complemental to the bores of said beam, means for connecting and simultaneously moving said slide sections whereby the bores thereof may be shifted into and out of registry with the spaced sections of the bores of said beam, and means interposedbetween said sections and said connectf ing means for yieldingly seating said sections in said channeL 7. In an organ stop, a beam having spaced bore sections, a slide carried by said beam formed to provide a. passageway between said spaced bore sections for providing` communication between a wind box and an organ pipe, means for shifting said slide to move said passageway into and out of registry with said bore sections for controlling such communication, and yielding means holding said slide against said beam.

8. In an organ stop, a beam having spaced bore sections, a slide carried by said beam formed to provide a passageway between said spaced bore sections ibr providing communication between a wind box and an organ pipe, and means for shifting said slide to move said passageway into and out of registry with said bore sections for controlling Such communication, said slide held against said beam by spring means.

9. In an Organ stop, a beam having a bore providing communication between a wind box and an organ pipe, and a slide for controlling such communication, said slide having a` free exposed surface, and yielding means engaging said surface to hold said slide against said beam.

10. In an organ stop, a beam having a bore providing communication between a wind box and an organ pipe, a channel in said beam arranged transversely of and intersecting and dividing said bore into two spaced sections, and

. a slide complemental to said channel and seated therein by gravity, said slide having a dorm adapted to register with and provide a passageway between said spaced bore sections.

11. In an organ stop, a beam having a bore providing communication between a wind box and an organ pipe, a substantially V-shaped channel in said beam arranged transversely of and intersecting said bore and having its apex pointed downward, and a slide complemental to said channel and seated therein by gravity.

12. In an organ stop, a beam having two bores, means providing communication for both of said bores between a wind box and a single organ pipe, channels in said beam arranged transversely of and intersecting and dividing the respective bores into two spaced sections, a complementally bored slide tted to each of said channels and seated therein, and means for longitudinally shifting said slides to control communication between the spaced sections of the respective bores of said beam.

13. In an organ stop, a beam having spaced bore sections forming portions of the air passage between a wind box and an organ pipe, a slide and means supporting the same for sliding movement in contact with said beam, said slide having passage means for registry with said spaced bore sections of said beam, and means for moving said slide to bring the passage means thereof into and out of registry with said spaced bore sections.

CHARLES S. NORBURN. 

